Information about Star Topology
)
Star network layout
Star networks are one of the most common computer network topologies. In its simplest form, a star network consists of one central switch, hub or computer which acts as a conduit to transmit messages. If the central node is passive, the originating node must be able to tolerate the reception of an echo of its own transmission, delayed by the two-way transmission time (i.e. to and from the central node) plus any delay generated in the central node. An active star network has an active central node that usually has the means to prevent echo-related problems.
The star topology reduces the chance of network failure by connecting all of the systems to a central node. When applied to a bus-based network, this central hub rebroadcasts all transmissions received from any peripheral node to all peripheral nodes on the network, sometimes including the originating node. All peripheral nodes may thus communicate with all others by transmitting to, and receiving from, the central node only. The failure of a transmission line linking any peripheral node to the central node will result in the isolation of that peripheral node from all others, but the rest of the systems will be unaffected.
Advantages
- Good performance.
- Scalable, Easy to set up and to expand.
- Any non-centralised failure will have very little effect on the network, whereas on a ring network it would all fail with one fault.
- Easy to detect faults
- Data Packets are sent quickly as they do not have to travel through any unnecessary nodes.
- It is used for centralised control.
All data goes through the central point, which can be equipped with diagnostic devices that make it easy to trouble shoot and manage the network.
Hierarchical organization allows isolation of traffic on the channel. This is beneficial when several, but not all, computers place a heavy load on the network. Traffic from those heavily used computers can be separated from the rest or dispersed throughout for a more even flow of traffic.
See also
as a college campus, industrial complex, or a military base. A CAN, may be considered a type of MAN (metropolitan area network), but is generally limited to an area that is smaller than a typical MAN.
..... Click the link for more information.
..... Click the link for more information.
Network topology is the study of the arrangement or mapping of the elements (links, nodes, etc.) of a network, especially the physical (real) and logical (virtual) interconnections between nodes [1] [2] [3].
..... Click the link for more information.
..... Click the link for more information.
A network switch is a computer networking device that connects network segments.
Low-end network switches appear nearly identical to network hubs, but a switch contains more "intelligence" (and a slightly higher price tag) than a network hub.
..... Click the link for more information.
Low-end network switches appear nearly identical to network hubs, but a switch contains more "intelligence" (and a slightly higher price tag) than a network hub.
..... Click the link for more information.
An Ethernet hub or concentrator is a device for connecting multiple twisted pair or fiber optic Ethernet devices together, making them act as a single segment. Hubs work at the physical layer (layer 1) of the OSI model. The device is thus a form of multiport repeater.
..... Click the link for more information.
..... Click the link for more information.
A bus network topology is a network architecture in which a set of clients are connected via a shared communications line, called a bus. There are several common instances of the bus architecture, including one in the motherboard of most computers, and those in some versions of
..... Click the link for more information.
..... Click the link for more information.
A ring network is a network topology in which each node connects to exactly two other nodes, forming a circular pathway for signals: a ring. Data travels from node to node, with each node handling every packet.
..... Click the link for more information.
..... Click the link for more information.
Mesh networking is a way to route data, voice and instructions between nodes. It allows for continuous connections and reconfiguration around broken or blocked paths by “hopping” from node to node until the destination is reached.
..... Click the link for more information.
..... Click the link for more information.
Token bus is a network implementing the token ring protocol over a "virtual ring" on a coaxial cable. A token is passed around the network nodes and only the node possessing the token may transmit.
..... Click the link for more information.
..... Click the link for more information.
A hypertree is an acyclic hypergraph.
Tree and hypertree networks are important special cases of star network topologies.
A Tree Network consists of star-configured nodes connected to switches/concentrators, each connected to a linear bus backbone.
..... Click the link for more information.
Tree and hypertree networks are important special cases of star network topologies.
A Tree Network consists of star-configured nodes connected to switches/concentrators, each connected to a linear bus backbone.
..... Click the link for more information.
This article is copied from an article on Wikipedia.org - the free encyclopedia created and edited by online user community. The text was not checked or edited by anyone on our staff. Although the vast majority of the wikipedia encyclopedia articles provide accurate and timely information please do not assume the accuracy of any particular article. This article is distributed under the terms of GNU Free Documentation License.
Herod_Archelaus
